package com.jeln.web.admin;

import com.jeln.po.Blog;
import com.jeln.po.User;
import com.jeln.service.BlogService;
import com.jeln.service.TagService;
import com.jeln.service.TypeService;
import com.jeln.vo.BlogQuery;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;

import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;

@Controller
@RequestMapping("/admin")
public class BlogController {

    @Autowired
    private BlogService blogService;

    @Autowired
    private TypeService typeService;

    @Autowired
    private TagService tagService;


    //跳转博客页面
    @GetMapping("/blogs")
    public String blogs(@PageableDefault(size = 5, sort = {"updateTime"}, direction = Sort.Direction.DESC) Pageable pageable,
                       BlogQuery blog, Model model){
        //拿到所有type（可以以type下拉查询）
        model.addAttribute("types",typeService.listType());
        model.addAttribute("page",blogService.listBlog(pageable,blog));
        return "admin/blogs";
    }

    //博客页面开启查询刷新的是列表区域(局部渲染)
    @PostMapping("/blogs/search")
    public String search(@PageableDefault(size = 5, sort = {"updateTime"}, direction = Sort.Direction.DESC) Pageable pageable,
                         BlogQuery blog, Model model) {
        model.addAttribute("page", blogService.listBlog(pageable, blog));
        return "admin/blogs :: blogList";
    }

    //博客新增表单页面
    @GetMapping("/blogs/input")
    public String input(Model model) {
        setTypeAndTag(model);
        model.addAttribute("blog", new Blog());
        return "admin/blogs-input";
    }

    private void setTypeAndTag(Model model) {
        model.addAttribute("types", typeService.listType());
        model.addAttribute("tags", tagService.listTag());
    }


    @GetMapping("/blogs/{id}/input")
    public String editInput(@PathVariable Long id, Model model) {
        setTypeAndTag(model);
        Blog blog = blogService.getBlog(id);
        blog.init();
        model.addAttribute("blog",blog);
        return "admin/blogs-input";
    }

    @PostMapping("/blogs")
    public String post(Blog blog, RedirectAttributes attributes, HttpSession session){
        blog.setUser((User) session.getAttribute("user"));
        blog.setType(typeService.getType(blog.getType().getId()));
        blog.setTags(tagService.listTag(blog.getTagIds()));
        Blog b=blogService.saveBlog(blog);
        if(blog.getId()==null){
            b=blogService.saveBlog(blog);
        }else{
            b=blogService.updateBlog(blog.getId(),blog);
        }
        if (b==null){
            attributes.addFlashAttribute("message","操作失败");
        }else{
            attributes.addFlashAttribute("message","操作成功");
        }
        return "redirect:/admin/blogs";
    }


    //博客删除
    @GetMapping("/blogs/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes attributes) {
        blogService.deleteBlog(id);
        attributes.addFlashAttribute("message", "删除成功");
        return "redirect:/admin/blogs";
    }

}
